Angle-gage for mitering-machines.



No. 865,692. PATENTED srzmlo, 1907. w. R. POX & M. LUND.

ANGLE GAGE FOR MITERING MACHINES.

APPLICATION FILED JAN. 19. 1901.

2 SHEETS-SHEET l Witnesses: 4 fiflw M WW THE NRRRIS PETERS 50., wAsumwolv, n. c.

No. 865,692. 7 I PATENTBD SEPT.' 10, 1907. w. R. FOX & M. LUND.

ANGLE GAGE FOR MITBRING MACHINES. IAPPLIOATIOR FILED JAN. 19, 1907.

2 SHEETS-432E! 2.

W i messes:

UNITED STATES PATENT OFFICE.

WILLIAM R. FOX AND MATTHEW LUND, OF GRAND RAPIDS, MICHIGAN, ASSIGNORS TOFOX TYPE WRITER COMPANY, OF GRAND RAPIDS, MICHIGAN.

ANGLE-GAGE FOR MITERING-MACHINES.

Specification of Letters Patent.

Patented Sept. 10, 1907.

To all whom it may concern:

Be it known that we, WILLIAM R. Fox and l\IATTHE\V LUND, citizens of theUnited States, residing at Grand Rapids, county of Kent, State ofMichigan, have invented certain new and useful Improvementsin Angle-Gages for l\Iitering-Machines, of which the following is aspecification.

This invention relates to new and useful improvements in saw tables ortables for mitering machines, and attachments therefor.

The objects of this invention areto provide an improved construction oftable and attachments by means of which it will be possible to readilyadjust guides for cutting segments of various lengths for variousdiameters of circles, which is a matter of importance to patternmakersgenerally. It is also often desirable to provide portions of a circle.

Objects relating to details of construction will definitely appear fromthe detailed description to follow.

I accomplish the objects of my invention by the devices and meansdescribed in the following specification.

The invention is clearly defined and pointed out in the claims.

A structure embodying the features of my invention is fully illustratedin the accompanying drawing forming a part of this specification, inwhich:

Figure l is a plan view of an improved Fox mitering machine, providedwith one of my improved tables and attachments; Fig. 2 is a diagrammaticview showing some of the different adjustments of the attachment on thetable; Fig. 3 is an enlarged detail sectional view taken on a linecorresponding to line 3-3 of Fig. 1, showing one of the adjusting clampsE Fig. 4 is an enlarged detail transverse sectional view on line 44 ofFig. 1, through one of the gage bar clamping means E for securing thebar to the table; Fig. 5 is an en larged detail sectional view of thepivoted and yieldingly adjustable gages D D, taken on a linecorresponding to line 5-5 of Fig. 6; and Fig. 6 is an enlarged detailsectional view of the same parts, showing details of construction, takenon a line corresponding to line 6-6 of Fig. 5.

In the drawing, similar letters of reference refer to similar partsthroughout the several views, and all of the sectional views are takenlooking in the direction of the little arrows at the ends of the sectionlines.

In pattern-making, it is often desired to form circles or arcs ofcircles of wood or similar material. To cut segments or equal parts of acircle with neatness and despatch is very desirable.

With my improved table and adjustable gage I can very readily set thesame for segments of circles, put the segments in position, and trimthem to exactly the right dimensions to make up equal parts of circlesin various diameters, dividing the circles in this way into as manyequal parts as is practical to use.

Referring to the lettered parts of the drawing, A is the table of animproved Fox trimmer embodying the features of my invention; B is thecutting-knife arranged to travel across the back edge of the table; andC C are the adjustable angle blocks, only one of which is made use of inconjunction with my present inventions. This angle-block is adjustableto different angles and is used in the ordinary way, when my especialattachment is not in position. In use with my attachment, the angleguide that is employed is set at right angles to the cutting line of theknife, and the pe riphery of each segment rests against it in use. Onthe table I lay out a diagram of as many radial lines as it is desiredto accommodate on the said table, the same appearing at a a a a, whichdetermine the number of segments that any circle will be divided into.These all radiate from the apex of the angle stop O. The line a is atthe proper angle, viz., 30, for forming these segments; line a is at theproper angle for four segments, viz., 45; line a is at the proper anglefor six segments, viz., and line a is at the proper angle for twelvesegments, viz., 75. As many lines can be added at different angles as itis desired to provide for segment numbers. By exact measurement, theexact point on each of these lines which would be reached by a segmentof circles; the particular diameter is indicated, these appearing asindicated in the drawing marked by figures on the line a from 6 to 21,showing the position taken by segments for circles of six inches totwentyone inches in diameter.

My improved attachment consists of a straight bar D which is providedwith a suitable clamp E for securing the same to the table so that itsedge will exactly coincide with any of the lines selected. The clamp Eis secured by a set screw 6 at a predetermined point indicated by thescrew-threaded holes appearing in the table A, as illustrated in Fig. 1.An exactly similar clamp E secured by a set screw '0 inserted in one oranother of the same holes is provided for the bar E, and clamps the sameadjustably so that the bar D can be adjusted on exactly the linerequired. A brace arm E, also a clamp E, is made use of in securing thisbar D to the table with great rigidity, the bar E having a connection atc to the clamp E to the bar D, thereby securing adjustment. A swingingpart D is kept in its seat by the set screw (1. On the end of this baris an adjustable sliding block D which is held normally outward andyieldingly in position by a coiled spring (2 in a socket in the end ofthe bar D. The outward movement of this block D is regulated by the setscrew cZ extending into a slot d in the side of the socket.

The swinging gage piece D is provided with a right angled notch, theapex of which is in line with the edge of the guide bar D and isprovided with circular supports having the axis of its rotation at theapex of the angle. This swinging guide D is left free to turn on itspivot. The pivoting is accomplished by the annular rib d engaging acorresponding groove in the block D When it is desired, for'instance, toform a circle of twelve segments twenty-two inches in diameter, the barD is secured in the position indicated in Fig. 1 with the apex of theangle of the swinging gage D exactly on that point, indicated by thenumber twenty-two. The bar D is then rigidly secured in position. Theface a of the bar D is placed upon and parallel with the radial linewhich indicates the angle that is to be cut. Segments of the circle cutsomewhere near the proper dimension are then put in place, theirperipheries i'itting against the guide-block C, and they are crowdedinto the angle of the stop D and the yielding block D is forced backupon the radial line of the angle indicated and the knife is'operated.The segment is then reversed and a cut taken off from the other end. Thepiece is then put in the first position and thin cuts are taken offuntil the yielding gage has moved to the position to which it was firstadjusted. The last cut should be a very light one, so that a smoothfinish will be secured. When it is desired to produce a different numberof segments of different diameters, the gage is adjusted on thedifferent lines indicated in Fig. I, or additional lines and the samemethod is pursued, when segments of different lengths and differentdiameters will be readily produced, as clearly appears by the dottedlines in the diagrammatic view in Fig 2.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent is:

1. In a gage device, the combination of a table A with a straightcutting line at the rear and with radial lines thereon, radiating fromthe point at the rear edge of the table; a gage arranged at right anglesto the cutting edge of the table; an adjustable gage-bar D with ayielding block I) at the rear end; a pivoted gage portion D withright-angled faces, the apex of which is in the line of one edge of thegage bar I); clamp members I 1 with set screws therethrough, engagingsuitable holes in said table; a brace bar E secured with a suitableclamp E to the gage bar D to the table by the clamp E", whereby the gageI) can be set with the apex at the proper point for forming segments andthe segments can be yieldingly pressed against the same to graduallybring them to the proper dimensions by cutting from the segments at thecutting edge of the table, all co-acting substantially as described andfor the purpose specified.

In a gage device, the combination of a cutting table A with means fortrimming in a straight line along one side of the same; a gage arrangedat right angles to the cutting-edge; radial lines radiating from thepoint of interscction of the right-angled gage on the cutting edge,

with suitable scales thereon for the different dimensions of circles; anadjustable detachable bar for arrangement on said radial lincs; suitablemeans for clamping it in place; and a swinging gage with right-angledsurfaces, the apex of which can be arranged on said radial lines,yieldingly supported on the front end of said bar coacting substantiallyas described and for the purpose specified.

In a gage device. the combination of a cutting table with means fortrimming in a straight line along one side of the same; a gage arrangedat right angles to the cutting edge; radial lines radiating from thepoint of intersection of the right-angled gage on the cutting edge, withsuitable scales thereon for the different dimensions of circles; anadjustable detachable bar for arrangement on said radial lines; suitablemeans for clamping it in place; and a swinging gage with right-angledsurfaces, the apex of which can be arranged on said radial lines,supported on the front end of said bar coacting substantially asdescribed and for the purpose specified.

'-l. In a gage device, the combination of a table A with suitable meansfor trimming in a straight line at one edge thereof; a gage at rightangles thereto; a yielding stop with rightangled faces, with means foradjustably securing the same at predetermined points 'whereby thesegments can be formed, as specified. V

5. In a gage device, the combination of a table A with suitable meansfor trimming in a straight line at one edge thereof; a gage at rightangles thereto; a yielding stop, with means for adjustably securing thesame at predetermined points whereby the segments'can be formed, asspecified.

(i. In a gage device, the combination of the bar D with a socket at therear end; a yielding block 1) adjustable in the end of said bar D andheld normally outward by the spring 11; a set screw 11 adapted to engagea suitable.

slot 11 to limit the movement of said stop and a swinging gage portion Dhaving right-angled surfaces, supported on suitable grooved ways at therear end of the block 1), all co-acting substantially as described andfor the purpose specified.

7. In a gage device, the combination of a bar D; suitable means forclamping the same to a cutting table; a brace bar E; a clamp E embracingthe bar I) with a set screw 1: for clamping the same thereto, said setscrew forming a pivot for the brace bar E; and a clamp for clamping thebrace bar to the table, co-acting for the purpose specified.

8. In a gage device the combination of the bar D with a socket at therear end; a block D adjustable in the end of said bar D and heldnormally outward by the spring 11"; a set screw 11 adapted to engage asuitable slot 61 to limit the movement of said stop; and a swinging gageportion D having right-angled surfaces, supported on suitable groovedways at the rear end of said block D, all co-acting substantially asdescribed and for the purpose specified.

In witness whereof, we have hereunto set our hands and seals in thepresence of two witnesses.

WILLIAM R. FOX. [n s.] MATTHEW LUND. [1,. s.]

Witnesses J. 1m Vmno, .Tos. B. \VARE.

